Slidable inner jaw wrench



Dec. 7, 1954 Fig.

RAwLlNGs ETAL 2,696,134

SLIDABLE INNER JAW WRENCH j Filed Oct. 5, 1955 www Ill/Il Ray J Raw/ings BY ard/WW 19mm 2,696,134 Patented Dec. 7, 1954 hee SLIDABLE INNER JAW WRENCH Ray J. Rawlings and Roy J. Nye, Prosser, Wash. Application October 5, 1953, Serial No. 334,227

2 Claims. (Cl. 81164) the jaws may be moved to a gripping position at a point remote from said jaws.

Another object of this invention is to provide a con' crete form tie wrench having arcuate jaws with work gripping teeth thereon.

A further object of this invention is to provide a concrete form tie wrench which may be used when the tie bolts are inaccessible between adjacent form sides.

Yet another object of this invention is to provide a concrete form tie wrench which is simple in construction, easy to manipulate, efficient in operation and inexpensive to manufacture.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a top plan view of the wrench of this i11- vention;

Figure 2 is a longitudinal, plan section taken substantially along the center line of the wrench of Figure 1 showing the structural detail thereof;

Figure 3 is a transverse, vertical section taken substantially along section line 3--3 of Figure 2 showing details of the slidable pin;

Figure 4 s a transverse, vertical section taken substantially along section line 4-4 of Figure 2 showing details of the relationship between the components of the wrench;

Figure 5 is a transverse, vertical section taken substantially along section line 5--5 of Figure 2 showing details of the jaw attaching key; and

Figure 6 is a transverse, vertical section taken substantially along section line 6-6 of Figure 2 showing details of the outer jaw keying means.

Referring now specically to the drawings, it will be seen that the numeral 10 generally designates the concrete form tie wrenchV of this invention including an elongated tubular member 12 having an arcuate jaw 14 secured to the side of the elongated tubular member 12 at one end thereof and projecting across the open end of the tubular member 12 in spaced relation thereto. The opposite end of the tubular member 12 is provided with an externally threaded portion 16 having a pair of transversely extending elongated slots 18 extending to the rcmote end of the tubular member 12. Slidably mounted in the tubular member 12 is an elongated rod member 20 having a bearing portion 22 at one end thereof which closely tits the inner surface of the tubular member 12. At the end of the rod 20 adjacent the jaw 14 is a bore 24 having a projecting elongated key 25 extending inwardly along one side thereof and a jaw member 26 having a projecting portion received in the bore 24 and having a keyway engaging the key 25. A screw threaded member 28 is inserted through a suitable bore in the jaw 26 for engaging an internally threaded bore in the end of the rod 20. At the opposite end of the elongated rod 20 is rotatably secured an elongated and internally threaded handle member 30. The closed end of the handle member 30 is provided with a bore 32 receiving a projecting portion 34 of the rod member 20 and the extreme end of the projecting portion 34 is riveted over as indicated by the numeral 36. A friction washer 38 is positioned between the riveted portion 36 and the tubular handle 30. A transverse pin 40 is positioned in the rod 20 and extends into the slots 18 in the tubular member 12 adjacent the lower extremity of of the tubular handle member 30 thereby precluding relative rotation between the rod member20 and the tubular member 12. The arcuate jaw 14 is provided with an arcuate keyway 42 and an arcuate toothed member 44 is secured to the keyway 42 by a suitable key 46 and a screw 48 extending therethrough for securing the toothed member 44 to the arcuate jaw 14.

It will also be noted that the inner jaw 26 is arcuate in shape and is provided with teeth forming grooves on the surface facing the arcuate jaw 14. It will be noted that the exterior surface of the tubular handle member 30 is knurled as indicated by the numeral 50 thereby providing an eflicient gripping portion for manipulating the jaws 26 and 14 in relation to each other.

The operation of the device will be readily understood. The elongated tubular member 12 is inserted between adjacent form walls and the jaws 26 and 14 are gripped t around a tie bolt by manipulation of the handle member 30 thereby moving the jaws relative to each other as desired. The transverse pin 40 maintains the jaws 14 and 26 in aligned position, and the gripping teeth on the jaws 26 and 14 provide an eliicient and non-slipping grip for the tie bolts or the portions to be gripped. This device is especially useful in securing tie bolts and spreader bolts to concrete forms wherein reinforcing rods are placed between adjacent concrete form side walls thereby forming the concrete forms with an inaccessible interior opening. Obviously, the jaws have removable tape portions such as indicated by the numeral 44 thereby providing a renewable gripping portion or a different shaped gripping portion as may be desired. The wrench of this invention should be elongated in such a manner that inaccessible spots may be easily reached and by proper manipulation of the jaws and the handle member the device may be utilized in fastening and unfastening bolts or tie members in a most convenient and eflicient manner.

From the foregoing, the construction and operation of the device will be readily understood and further explanaation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claims.

What is claimed as new is as follows:

l. A concrete form tie wrench comprising an elongated tubular member having a jaw member at one end thereof and an externally threaded portion at the other end, a rod member longitudinally slidable in said tubular member, a jaw on said rod member in opposition to said jaw member, and means for moving said jaws in relation to each other.

2. The structure as defined in claim 1 wherein said tubular member is provided with an elongated slot and said rod member is provided with a projecting pin slidable in said slot wherein said rod member is non-rotatively slidable in said tubular member thereby maintaining said jaws in alignment.

References Cited vin the tile of this patent UNITED STATES PATENTS Number Name Date 284,904 Rose Sept. 11, 1883 421,892 Barber et al. Feb. 25, 1890 2,389,933 Rober Nov. 27, 1945 2,526,167 Sparks Oct. 17, 1950 FOREIGN PATENTS Number Country Date 9 Great Britain of 1880 

